Free New Jersey CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the CDL double/triple trailer endorsement test, make sure to know it! Our CDL Practice Test NJ has the same questions as the real exam which is based on the NJ CDL Manual. It covers most of the subject areas on the Double/Triple Trailers Test such as pulling double and triple trailers, the risk of rollover, managing space, and special considerations when hauling multiple trailers. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, you can take this CDL practice test an unlimited number of times to make sure you learn all the questions. Let’s try our Free New Jersey CDL Double/Triple Trailers Practice Test today and pass your CDL endorsement exam! Good luck and keep driving safely!

Our CDL practice tests:
Based on 2022 NJ commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NJ CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the purpose of a front-brake limiting valve?
2.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
3.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
4.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
5.
To test the tractor protection valve, the engine needs to be:
6.
When you turn with the tractor/triple trailer combination, the wheels that off-track (cheat) the most are:
7.
You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
8.
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
9.
Which of these statements about quick steering movements and doubles/triples is true?
10.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
11.
During a normal drive, the spring brakes are held back by _____.
12.
A danger of a malfunctioning tractor protection valve is:
13.
After coupling the converter dolly to the first trailer, the pintle hook should be:
14.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
15.
Why do some air brake systems have an alcohol evaporator?
16.
Where are the brake drums located?
17.
If the malfunction lamp stays on after the bulb check, __________.
18.
You can test whether the trailer air system is charged by:
19.
When inspecting doubles and triples shut-off valves, which of the following is true?
20.
When uncoupling the rear trailer, which of these should be done first?